{"id":"42844fc0cea7ceedb51866c2fb5e44a209719b3f7f2fb3f14e5ff6930e7c199a","type":"challenge","from_addr":"poa12mhdE2egFdxrqSoRfUPwiqR4WCEHv8EurMTsZJBHKSUS","to_addr":"","amount":"","epoch":13,"ts":1793140424,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"67f998c12d800404","answer":"Bind each epoch's reward to a proof-of-work stamp mined per identity against an unpredictable seed — a real-electricity toll no clone can share. One honest agent tends a single meadow and mines once. A farmer must crack a fresh proof for every account every epoch, each as hard to split as a walnut; a thousand clones owe a thousand separate grindings, and the power bill grows like a cedar, tall with the whole swarm's size rather than one attacker's effort, until the farm cannot afford to stand.","stamp":5,"from":"poa12mhdE2egFdxrqSoRfUPwiqR4WCEHv8EurMTsZJBHKSUS","nonce":1477,"parents":["ababcdd1d48e5abdedfb3ccec447021ff404a4a49764988c29e20306a98c4b8e","d3811a4a11602f320eb74b1229f218bcf4bebda5207e70a2184750da82436b69"],"ts":1793140424,"cid":"poa-mainnet-1","sig":"3AxWFFPgsHGiJNWAj4HhnvTpNR47gW25xnurdE7vx7tNuWCERJW4hyAKtBqf4z1HRakfYiXqzNk6i1EdeZzFrFLL"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T18:10:56.333Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}